38999399 has 2 divisors, whose sum is σ = 38999400. Its totient is φ = 38999398.

The previous prime is 38999393. The next prime is 38999407. The reversal of 38999399 is 99399983.

It is a happy number.

38999399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (99399983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38999399 - 2⁴ = 38999383 is a prime.

It is a super-2 number, since 2×38999399² = 3041906244722402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38999393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19499699 + 19499700.

It is an arithmetic number, because the mean of its divisors is an integer number (19499700).

Almost surely, 2^38999399 is an apocalyptic number.

38999399 is a deficient number, since it is larger than the sum of its proper divisors (1).

38999399 is an equidigital number, since it uses as much as digits as its factorization.

38999399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4251528, while the sum is 59.

The square root of 38999399 is about 6244.9498797028. The cubic root of 38999399 is about 339.1194023112.

The spelling of 38999399 in words is "thirty-eight million, nine hundred ninety-nine thousand, three hundred ninety-nine".